Santo Antônio is a city located in the country of São Tomé and Príncipe. It serves as one of the primary urban centers within the island nation, situated in the Gulf of Guinea off the west coast of Central Africa.
The city is characterized by its tropical geography and its role as a local hub for commerce and residency. As part of the infrastructure of São Tomé and Príncipe, it contributes to the country's regional identity and maritime accessibility.